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Effects of Phenolic and Phosphite Antioxidants on the properties for PC/ABS Blends during High-Shear-Rate Processing
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  • Journal title : Korean Chemical Engineering Research
  • Volume 52, Issue 2,  2014, pp.266-271
  • Publisher : The Korean Institute of Chemical Engineers
  • DOI : 10.9713/kcer.2014.52.2.266
 Title & Authors
Effects of Phenolic and Phosphite Antioxidants on the properties for PC/ABS Blends during High-Shear-Rate Processing
Lee, Han Ki; Kim, Seon Hong; Lee, Hyung Il; Yoo, Jae Jung; Yong, Da Kyoung; Choi, Seok Jin; Lee, Seung Goo; Lee, Kee Yoon;
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 Abstract
The effects of antioxidants on the properties of Polycarbonate/Acrylonitrile-Butadiene-Styrene(PC/ABS) blends were studied for the functions of the screw speed and loaded duration of high shear rate processing in order to investigate the degradation for PC/ABS blends. Tris-(2,4-di-tert-butyl-phenyl phosphate) (A1) and Bis(2,4-dicumylphenyl) pentaerythritol diphosphite (A3) as phosphite antioxidants and Octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate (A2) as a phenolic antioxidant are used. The thermal properties were detected by TGA and severely decreased, after the processing. The stress-induced and thermal degradation for PC/ABS blends with the antioxidant A3 was retarded better than the others. By using UTM, the mechanical properties also showed individually decreased according to the antioxidants, after the processing, especially, the elongations showed considerable decline behaviors, while the tensile strengths of PC/ABS blends changed very little. For example, in the operating conditions of 1000rpm of screw speed and 20 seconds of loaded period, the elongations decreased from 148% before the processing, to 91.6% with the A1, to 63% with the A2 and to 131% with the A3 after the processing, respectively. In order to get the morphological properties, the size distributions of the dispersed phases for PC/ABS were investigated by SEM analysis and tended to decrease, as the screw speed and loaded period of the processing increased. Therefore, we confirmed that the antioxidant A3 was the best of all of three to inhibit the stress-induced degradation of PC/ABS blends during the high shear rate processing.
 Keywords
PC/ABS Blend;Antioxidant;Degradation;High Shear Processing;Thermogravimetric Analysis;
 Language
Korean
 Cited by
1.
고속 전단 가공에 의한 PC/ABS 블렌드의 열적 물성 변화 연구,이형일;이한기;김대식;최석진;김선홍;유재정;용다경;이승구;이기윤;

폴리머, 2014. vol.38. 3, pp.320-326 crossref(new window)
1.
Effects of the High Shear Rate Processing on the Thermal Properties of PC/ABS Blends, Polymer Korea, 2014, 38, 3, 320  crossref(new windwow)
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